Fix loki after update

Author: enriquetomasmb

nebula/addons/waf/loki-config.yml

@@ -1,5 +1,8 @@
 auth_enabled: false
 
+common:
+  path_prefix: /loki
+
 server:
   http_listen_port: 3100
 
@@ -30,10 +33,11 @@ schema_config:
         period: 24h
 
 storage_config:
-  tsdb:
-    dir: /loki/tsdb
-  wal:
-    dir: /loki/wal
+  filesystem:
+    directory: /loki/chunks
+  tsdb_shipper:
+    active_index_directory: /loki/tsdb-index
+    cache_location: /loki/tsdb-cache
 
 compactor:
   working_directory: /loki/boltdb-shipper-compactor